<html><head></head>
<body>
<?php

$u = "15.3check";
$ui = intval($u);
$uci = (int) $u;
$upz = $u + 0;

var_dump( $u ); print( "<br>\n" );
var_dump( $ui ); print( "<br>\n" );
var_dump( $uci ); print( "<br>\n" );
var_dump( $upz ); print( "<br>\n" );

print( "u: $u - ui: $ui <br>\n" );

if( is_numeric($u) )
{
	print( "u is numeric<br>" );
}
else
{
	print( 'u is NOT numeric<br>' );
}

if( $u == $ui )
{
	print( "u == ui<br>" );
}
else
{
	print( "u !== ui<br>" );
}


?>
</body>
</html>
